Deep Gas Comprehensive Control Techniques in 5109 Mining Area of Meihe Coal Mine 3^# Shaft

Through the analysis of gas emission laws of 5109 steep-inclined coal seam in Meihe Coal Mine deep mining area, the article put forward a set of gas control measures including roof through beds hole pre-drainage and gas drainage while mining technology, using bedding cross borehole to drain regional coal seam gas technology, using high level borehole to drain gas in goaf and roof fractured zone technology, using high level tailing roadway buried pipe technology to drain gas in goaf, gas drainage while mining technology with bedding down hole, closed goaf gas extraction with steep seam slicing mining technology. The in-situ experimental result showed that the technology solved the gas issues in steeply inclined coal seam.